HiFive Unleashed¶
FU540-C000 RISC-V SoC¶
The FU540-C000 is the world’s first 4+1 64-bit RISC-V SoC from SiFive.
The HiFive Unleashed development platform is based on FU540-C000 and capable of running Linux.
Mainline support¶
The support for following drivers are already enabled:
- SiFive UART Driver.
- SiFive PRCI Driver for clock.
- Cadence MACB ethernet driver for networking support.
- SiFive SPI Driver.
- MMC SPI Driver for MMC/SD support.
TODO:
- U-Boot expects the serial console device entry to be present under /chosen DT node. Without a serial console U-Boot will panic. Example:
chosen {
stdout-path = "/soc/serial@10010000:115200";
};
Building¶
- Add the RISC-V toolchain to your PATH.
- Setup ARCH & cross compilation enviornment variable:
export ARCH=riscv
export CROSS_COMPILE=<riscv64 toolchain prefix>
- make sifive_fu540_defconfig
- make
Flashing¶
The current U-Boot port is supported in S-mode only and loaded from DRAM.
A prior stage M-mode firmware/bootloader (e.g OpenSBI) is required to boot the u-boot.bin in S-mode and provide M-mode runtime services.
Currently, the u-boot.bin is used as a payload of the OpenSBI FW_PAYLOAD firmware. We need to compile OpenSBI with below command:
make PLATFORM=sifive/fu540 FW_PAYLOAD_PATH=<path to u-boot-dtb.bin>
More detailed description of steps required to build FW_PAYLOAD firmware is beyond the scope of this document. Please refer OpenSBI documenation. (Note: OpenSBI git repo is at https://github.com/riscv/opensbi.git)
Once the prior stage firmware/bootloader binary is generated, it should be copied to the first partition of the sdcard.
sudo dd if=<prior_stage_firmware_binary> of=/dev/disk2s1 bs=1024
Booting¶
Once you plugin the sdcard and power up, you should see the U-Boot prompt.
Sample boot log from HiFive Unleashed board¶
U-Boot 2019.07-00024-g350ff02f5b (Jul 22 2019 - 11:45:02 +0530)
CPU: rv64imafdc
Model: SiFive HiFive Unleashed A00
DRAM: 8 GiB
MMC: spi@10050000:mmc@0: 0
In: serial@10010000
Out: serial@10010000
Err: serial@10010000
Net: eth0: ethernet@10090000
Hit any key to stop autoboot: 0
=> version
U-Boot 2019.07-00024-g350ff02f5b (Jul 22 2019 - 11:45:02 +0530)
riscv64-linux-gcc.br_real (Buildroot 2018.11-rc2-00003-ga0787e9) 8.2.0
GNU ld (GNU Binutils) 2.31.1
=> mmc info
Device: spi@10050000:mmc@0
Manufacturer ID: 3
OEM: 5344
Name: SU08G
Bus Speed: 20000000
Mode: SD Legacy
Rd Block Len: 512
SD version 2.0
High Capacity: Yes
Capacity: 7.4 GiB
Bus Width: 1-bit
Erase Group Size: 512 Bytes
=> mmc part
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000800 0x000107ff "bootloader"
attrs: 0x0000000000000000
type: 2e54b353-1271-4842-806f-e436d6af6985
guid: 393bbd36-7111-491c-9869-ce24008f6403
2 0x00040800 0x00ecdfde ""
attrs: 0x0000000000000000
type: 0fc63daf-8483-4772-8e79-3d69d8477de4
guid: 7fc9a949-5480-48c7-b623-04923080757f
Now you can configure your networking, tftp server and use tftp boot method to load uImage.
=> setenv ipaddr 10.206.7.133
=> setenv netmask 255.255.252.0
=> setenv serverip 10.206.4.143
=> setenv gateway 10.206.4.1
=> tftpboot ${kernel_addr_r} /sifive/fu540/Image
ethernet@10090000: PHY present at 0
ethernet@10090000: Starting autonegotiation...
ethernet@10090000: Autonegotiation complete
ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00)
Using ethernet@10090000 device
TFTP from server 10.206.4.143; our IP address is 10.206.7.133
Filename '/sifive/fu540/Image'.
Load address: 0x84000000
Loading: #################################################################
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1.2 MiB/s
done
Bytes transferred = 8867100 (874d1c hex)
=> tftpboot ${ramdisk_addr_r} /sifive/fu540/uRamdisk
ethernet@10090000: PHY present at 0
ethernet@10090000: Starting autonegotiation...
ethernet@10090000: Autonegotiation complete
ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00)
Using ethernet@10090000 device
TFTP from server 10.206.4.143; our IP address is 10.206.7.133
Filename '/sifive/fu540/uRamdisk'.
Load address: 0x88300000
Loading: #################################################################
#################################################################
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##############
418.9 KiB/s
done
Bytes transferred = 2398272 (249840 hex)
=> tftpboot ${fdt_addr_r} /sifive/fu540/hifive-unleashed-a00.dtb
ethernet@10090000: PHY present at 0
ethernet@10090000: Starting autonegotiation...
ethernet@10090000: Autonegotiation complete
ethernet@10090000: link up, 1000Mbps full-duplex (lpa: 0x7c00)
Using ethernet@10090000 device
TFTP from server 10.206.4.143; our IP address is 10.206.7.133
Filename '/sifive/fu540/hifive-unleashed-a00.dtb'.
Load address: 0x88000000
Loading: ##
1000 Bytes/s
done
Bytes transferred = 5614 (15ee hex)
=> setenv bootargs "root=/dev/ram rw console=ttySIF0 ip=dhcp earlycon=sbi"
=> booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}
## Loading init Ramdisk from Legacy Image at 88300000 ...
Image Name: Linux RootFS
Image Type: RISC-V Linux RAMDisk Image (uncompressed)
Data Size: 2398208 Bytes = 2.3 MiB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
## Flattened Device Tree blob at 88000000
Booting using the fdt blob at 0x88000000
Using Device Tree in place at 0000000088000000, end 00000000880045ed
Starting kernel ...
[ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
[ 0.000000] Linux version 5.3.0-rc1-00003-g460ac558152f (anup@anup-lab-machine) (gcc version 8.2.0 (Buildroot 2018.11-rc2-00003-ga0787e9)) #6 SMP Mon Jul 22 10:01:01 IST 2019
[ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '')
[ 0.000000] printk: bootconsole [sbi0] enabled
[ 0.000000] Initial ramdisk at: 0x(____ptrval____) (2398208 bytes)
[ 0.000000] Zone ranges:
[ 0.000000] DMA32 [mem 0x0000000080200000-0x00000000ffffffff]
[ 0.000000] Normal [mem 0x0000000100000000-0x000000027fffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000080200000-0x000000027fffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x000000027fffffff]
[ 0.000000] software IO TLB: mapped [mem 0xfbfff000-0xfffff000] (64MB)
[ 0.000000] CPU with hartid=0 is not available
[ 0.000000] CPU with hartid=0 is not available
[ 0.000000] elf_hwcap is 0x112d
[ 0.000000] percpu: Embedded 18 pages/cpu s34584 r8192 d30952 u73728
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 2067975
[ 0.000000] Kernel command line: root=/dev/ram rw console=ttySIF0 ip=dhcp earlycon=sbi
[ 0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[ 0.000000] Sorting __ex_table...
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] Memory: 8182308K/8386560K available (5916K kernel code, 368K rwdata, 1840K rodata, 213K init, 304K bss, 204252K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] rcu: Hierarchical RCU implementation.
[ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[ 0.000000] NR_IRQS: 0, nr_irqs: 0, preallocated irqs: 0
[ 0.000000] plic: mapped 53 interrupts with 4 handlers for 9 contexts.
[ 0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [1]
[ 0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 3526361616960 ns
[ 0.000006] sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2199023255500ns
[ 0.008559] Console: colour dummy device 80x25
[ 0.012989] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=4000)
[ 0.023104] pid_max: default: 32768 minimum: 301
[ 0.028273] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[ 0.035765] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[ 0.045307] rcu: Hierarchical SRCU implementation.
[ 0.049875] smp: Bringing up secondary CPUs ...
[ 0.055729] smp: Brought up 1 node, 4 CPUs
[ 0.060599] devtmpfs: initialized
[ 0.064819] random: get_random_u32 called from bucket_table_alloc.isra.10+0x4e/0x160 with crng_init=0
[ 0.073720] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.083176] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[ 0.090721] NET: Registered protocol family 16
[ 0.106319] vgaarb: loaded
[ 0.108670] SCSI subsystem initialized
[ 0.112515] usbcore: registered new interface driver usbfs
[ 0.117758] usbcore: registered new interface driver hub
[ 0.123167] usbcore: registered new device driver usb
[ 0.128905] clocksource: Switched to clocksource riscv_clocksource
[ 0.141239] NET: Registered protocol family 2
[ 0.145506] tcp_listen_portaddr_hash hash table entries: 4096 (order: 4, 65536 bytes, linear)
[ 0.153754] TCP established hash table entries: 65536 (order: 7, 524288 bytes, linear)
[ 0.163466] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes, linear)
[ 0.173468] TCP: Hash tables configured (established 65536 bind 65536)
[ 0.179739] UDP hash table entries: 4096 (order: 5, 131072 bytes, linear)
[ 0.186627] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes, linear)
[ 0.194117] NET: Registered protocol family 1
[ 0.198417] RPC: Registered named UNIX socket transport module.
[ 0.203887] RPC: Registered udp transport module.
[ 0.208664] RPC: Registered tcp transport module.
[ 0.213429] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.219944] PCI: CLS 0 bytes, default 64
[ 0.224170] Unpacking initramfs...
[ 0.262347] Freeing initrd memory: 2336K
[ 0.266531] workingset: timestamp_bits=62 max_order=21 bucket_order=0
[ 0.280406] NFS: Registering the id_resolver key type
[ 0.284798] Key type id_resolver registered
[ 0.289048] Key type id_legacy registered
[ 0.293114] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 0.300262] NET: Registered protocol family 38
[ 0.304432] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
[ 0.311862] io scheduler mq-deadline registered
[ 0.316461] io scheduler kyber registered
[ 0.356421] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[ 0.363004] 10010000.serial: ttySIF0 at MMIO 0x10010000 (irq = 4, base_baud = 0) is a SiFive UART v0
[ 0.371468] printk: console [ttySIF0] enabled
[ 0.371468] printk: console [ttySIF0] enabled
[ 0.380223] printk: bootconsole [sbi0] disabled
[ 0.380223] printk: bootconsole [sbi0] disabled
[ 0.389589] 10011000.serial: ttySIF1 at MMIO 0x10011000 (irq = 1, base_baud = 0) is a SiFive UART v0
[ 0.398680] [drm] radeon kernel modesetting enabled.
[ 0.412395] loop: module loaded
[ 0.415214] sifive_spi 10040000.spi: mapped; irq=3, cs=1
[ 0.420628] sifive_spi 10050000.spi: mapped; irq=5, cs=1
[ 0.425897] libphy: Fixed MDIO Bus: probed
[ 0.429964] macb 10090000.ethernet: Registered clk switch 'sifive-gemgxl-mgmt'
[ 0.436743] macb: GEM doesn't support hardware ptp.
[ 0.441621] libphy: MACB_mii_bus: probed
[ 0.601316] Microsemi VSC8541 SyncE 10090000.ethernet-ffffffff:00: attached PHY driver [Microsemi VSC8541 SyncE] (mii_bus:phy_addr=10090000.ethernet-ffffffff:00, irq=POLL)
[ 0.615857] macb 10090000.ethernet eth0: Cadence GEM rev 0x10070109 at 0x10090000 irq 6 (70:b3:d5:92:f2:f3)
[ 0.625634] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[ 0.631381] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[ 0.637382] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.643799] ehci-pci: EHCI PCI platform driver
[ 0.648261] ehci-platform: EHCI generic platform driver
[ 0.653497] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.659599] ohci-pci: OHCI PCI platform driver
[ 0.664055] ohci-platform: OHCI generic platform driver
[ 0.669448] usbcore: registered new interface driver uas
[ 0.674575] usbcore: registered new interface driver usb-storage
[ 0.680642] mousedev: PS/2 mouse device common for all mice
[ 0.709493] mmc_spi spi1.0: SD/MMC host mmc0, no DMA, no WP, no poweroff, cd polling
[ 0.716615] usbcore: registered new interface driver usbhid
[ 0.722023] usbhid: USB HID core driver
[ 0.726738] NET: Registered protocol family 10
[ 0.731359] Segment Routing with IPv6
[ 0.734332] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 0.740687] NET: Registered protocol family 17
[ 0.744660] Key type dns_resolver registered
[ 0.806775] mmc0: host does not support reading read-only switch, assuming write-enable
[ 0.814020] mmc0: new SDHC card on SPI
[ 0.820137] mmcblk0: mmc0:0000 SU08G 7.40 GiB
[ 0.850220] mmcblk0: p1 p2
[ 3.821524] macb 10090000.ethernet eth0: link up (1000/Full)
[ 3.828938] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 3.848919] Sending DHCP requests .., OK
[ 6.252076] IP-Config: Got DHCP answer from 10.206.4.1, my address is 10.206.7.133
[ 6.259624] IP-Config: Complete:
[ 6.262831] device=eth0, hwaddr=70:b3:d5:92:f2:f3, ipaddr=10.206.7.133, mask=255.255.252.0, gw=10.206.4.1
[ 6.272809] host=dhcp-10-206-7-133, domain=sdcorp.global.sandisk.com, nis-domain=(none)
[ 6.281228] bootserver=10.206.126.11, rootserver=10.206.126.11, rootpath=
[ 6.281232] nameserver0=10.86.1.1, nameserver1=10.86.2.1
[ 6.294179] ntpserver0=10.86.1.1, ntpserver1=10.86.2.1
[ 6.301026] Freeing unused kernel memory: 212K
[ 6.304683] This architecture does not have kernel memory protection.
[ 6.311121] Run /init as init process
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Busybox Rootfs
Please press Enter to activate this console.
/ #